Refrigeration apparatus



June 16, 1931. s. w. MASON REFRIGERATION APPARATUS Filed March 26. 1930INVENTOR. GEORGE W MAJON.

BY K W ATTORNEYS.

Patented June 16, 1931 UNITED STATES PATENT OFFICE GEORGE W. MASON, OFDETROIT, MICHIGAN, .ASSIGNOR TO COPELAND YRODUOTS, INQ,

' i A CORPORATION OF MICHIGAN REFRIGERATION APPARATUS Application fll'edMarch 26, 1930. Serial No. 439,014.

It is one of the primary objects of my invention to provide a simple andeconomical 1 construction of expansion chamber or freezer coupled with arefrigerant tank of simple design. More specifically, my inventionencompasses the making of an expansion chamber of the sheet metal typewith the refrigerant tank formed integrally therewith.

Another object of my invention is to provide a simple and economicalassembly of opcrating parts for the'refrigerant tank.

With the above and other objects in view,

my invention consists in the arrangement,

. 12, and an end 13 may be secured at the other combination andconstruction of the various parts of my improved device, as described111 the specification, claimed in my claims andshown in the accompanyingdrawings, in which:

Fig. 1 is a transverse sectional view of an ex ansion chamber andrefrigerant tank embo ying my invention.

Fig. 2 is a similar view showing a modification of the device shown inFig. 1.

Fig. 3 is a sectional view taken on line 33 of Fig.1. In theconstruction as illustrated in Figs. 1 and 3, Ihave shown a conventionalsheet metal type expansion chamber which is composed of superposedsheets of metal 5 and 6' the edges of which may be suitably sealed suchas at 7, by welding or other suitable means and the intermediateportions of which may be spot-welded together as at 8 to form adeviouspassage for the refrigerant which is fed thereto from the refrigeranttank 9.

The body portion of the tank 9 is formed as an integral extension of thesheet 6, as particularly shown in Fig. 1, and the outer end or edge ofthe sheet may be welded or otherwise secured and sealed to the sheet 5as at 10.

A sheet metal end 11 may be secured to the end of the body portion ofthe tank 9 as at end of the bod portion of the tank by-means of studs14. g suitable washer or gasket 15 may be provided to seal the joint.

Integral with the end element 13 is the inlet conduit or passage 16which may be connected with a pipe17 leading to a source of supply. Anelevated nipple integral with end 13-, is

to rise as the level of the refrigerant in thetank 9- rises until theneedle valve 19 is brought to its seat in the aperture 18, thus closingthe supply passage until refrigerant has been passed ofl from the tank 9into the freezer or expansion chamber 2 1.

In the modified construction shown in Fig.

2, the freezer or expansion chamber 24 is similarly formed by the use ofsheets 5and 6 and the refrigerant tank is composed of the in-' tcgraland oppositely concave extensions 26 and 27 from the sheets" 6 and 5,respectively. In this construction, a'fitting 28 is provided on thesheet 5 and has an aperture which opens, substantially at the level ofthe lowermost refrigerant passages, into the expansion chamber 24,, theedges of the fitting being sealed in any suitable manner with the faceof the sheet 5. A lug or car 29 depends from the fitting 28 and achanneled rod 30 is pivoted thereto as at 31. The rod 30 has a ball 32on the other end thereof acting as a float and a valve 33 adapted toseat in the fitting 28 as at 34 is provided with a screw threaded stem35 which engages the nut 36 held in the channel of the rod 30 againstrotation. In this construction the float and its valve are assembled asshown in Fig. 2, the position of i It will be obvious that variouschanges may be made in the arrangement, combination and construction ofthe various parts of my improved device without departing from the ofmetal having refrigerant passages between them, a sheet metalrefrigerant tank body formed as an integral extension of'one of saidsheets and connected with the freezer refrigerant passages,said tankhaving end elements, and at least one end element of said tank beingseparately formed and secured in the body of the tank, said end elementhaving both a substantially central pivot lug and an apertured inletnipple formed therein, and

a float arm terminally pivoted to said lug and intermediately providedwith a valve cooperating with the apertures in said nipple.

3. In combination, a freezer for refrigeration systems, composed ofsuperposed sheets of metal having refrigerant passages between them, asheet metal refrigerant tank. body formed as an integral extension ofone of said sheets and connected with the freezer refrigerantpassages,--said tank having end elements, and at least one end elementof said tank being separately formed and secured in their edges, a tankintegrally connected to and in constant communication with, the spacebetween said sheets,said tank being formed by oppositely concaveextensions of said sheetvalve means, at an opening provided with a seatfitting for feeding said refrigerant through one of said sheets intosaid tank, and a float, pivotally carried by said fitting, forcontrolling the level of the refrigerant in said tank by manipulation ofsaid valve.

7. An integral freezing and float chamber for refrigerating mechanismscomprising a pair of generally spaced sheet metal plates sealed at theiredges to form a continuous passage between them and further formed toprovide a bottom chamber for the reception of liquid refrigerant, meansfor introducing liquid refrigerant into said chamber and means formaintaining said liquid refrigerant at a predetermined level in saidchamber.

8. In combination, a pair of generally spaced'sheet metal plates'sealedtogether at their edges to form a refrigerant p'assage between them, anenlargement adjacent the bottom of said sheets and connected with saidpassage formed by an extension of at least one of said sheets, saidenlargement being provided with an open end, a cover for closing saidend, means for introducing refriger- 9 ant into said enlargement, and afloat mechanism carried by said cover for controlling the flow of liquidrefrigerant to said enlargement.

GEORGE W. MASON.

the body of the tank, said end element having both a substantiallycentral pivot lug and a downwardly aperturd nipple formed therein, and afloat arm terminally pivoted to said lug and intermediately providedwith a valve upwardly cooperating with the aperture in v said nipple.

4. In combination, a freezer for refrigeration systems' 'composed ofsuperposed sheets of metal having refrigerant passages between them, anda float-controlled refrigerant tank integrally connected with saidfreezer, said tank being positioned substantially on the level of thelowermost of said passages and formed by said sheets. 5. In combination,a freezer for refrigera tion systems comprising superposed sheets ofmetal having refrigerant passages between them, a float controlledrefrigerant tank integrally connected with said freezer,saidtank beingpositioned substantially on the level of the lowermost of said passagesand formed by oppositely concave extensions ofsaid'sheets, and one ofsaid sheet-s being apertured substantially at said level and thereprovided with a valve seat fitting.

,6. In combination, a pair. of generally spaced sheet metal platessealed together at oppositely concave extensions of.

